2H2O2 → 2H2O + O2

45.55 g ? g 21.44 g

What is the mass of H2O in the reaction above?

Which statement best describes how atoms combine to form sodium chloride (nacl)? a. a positively charged sodium ion and a positively charged chlorine ion form an covalent bond. b. a positively charged sodium ion and a negatively charged chlorine ion form an covalent bond. c. a positively charged sodium ion and a positively charged chlorine ion form an ionic bond. d. a positively charged sodium ion and a negatively charged chlorine ion form an ionic bond.

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?